Comments on: Dispatching Custom Events

By: Rich

Rich — Wed, 24 Feb 2010 15:46:48 +0000

@Jimfo, yes, you can pass any data type with an event. Check out the “Creating a Custom Event Class” section of the Passing Arguments with Events post.

By: jimfo

jimfo — Wed, 24 Feb 2010 15:35:18 +0000

Is it possible to pass an object array or other data types other than strings in the event object? I have been trying to pass an array along with the event object. The eventData variable is an array. So when I try to do this then I get an implicit coercion error can’t convert array to string. I know that I can pass a string back split it up into an array using the split method of the String Class. Is there a way to pass native data types such as an array in the event object.

public override function clone():Event {
return new CustomEvent(type, eventData, bubbles, cancelable);
}

By: Felix

Felix — Sun, 25 Oct 2009 01:27:34 +0000

Hey Rich, thanks for the explaining.
I just made my own customEvent and it works fine!

By: Rich

Rich — Thu, 22 Oct 2009 16:28:27 +0000

@Felix, that line actually dispatches the event, just like pressing the mouse button dispatches an event like MOUSE_DOWN. The first part of the process is to create a new event, using new Event(). Within that structure, you include the event constant for the type of event you want to dispatch (in the example you cited, it was Event.CHANGE). Alternately, you can simply dispatch a string (which is what the event constants contain). The second part is to dispatch that newly created event with dispatchEvent(). If you include a second argument (optional) true within the event creation step, the event will bubble up through the display list: dispatchEvent(new Event(Event.CHANGE, true));. Thanks to Zevan for writing this post!

By: Felix

Felix — Thu, 22 Oct 2009 15:59:55 +0000

Hey Rich nice book.

can you tell me what this line does?

dispatchEvent(new Event(Event.CHANGE));

I see people always put this line in the end, does this code tell flash to update the event?

Thanks

By: Alex Jeffery

Alex Jeffery — Wed, 29 Jul 2009 01:42:06 +0000

Thanks for this tutorial. I had been looking for a clear example of custom events so I could implement a reusable toolbar widget for a Flash game.

By: Esteban

Esteban — Thu, 05 Mar 2009 20:03:32 +0000

Nice and clear example. The OpenSlider class is extremely useful. Thanx for sharing.
I will go on and read your other posts.
Cheers!

By: Rich

Rich — Thu, 06 Nov 2008 21:02:09 +0000

Jim, this isn’t possible in the given mechanism that AS3 uses for events. However, you can create a custom Event class that will allow this for specific uses. I’ll write a post this weekend to show a simple example. It should be up by some time Monday afternoon.

By: What about adding a property for an event

What about adding a property for an event — Thu, 06 Nov 2008 18:16:00 +0000

What if you want to add data to the event being dispatched. So that your listener could grab some data from the event much like the COMPLETE event for an external XML Call. Is that possible.

Jim